Answer:
x = 12
Step-by-step explanation:
m<BCF and m<CFE are same-side interior angles.
Same-side interior angles are supplementary. This implies that:
m<CFE + m<BCF = 180°
where,
m<CFE = 11x°
m<BCF = 4x°
Plug in the values
11x + 4x = 180
15x = 180
x = 180/15
x = 12
Answer:
Hope This Helps
Step-by-step explanation:
The common difference (d) = 2
The first element (a) = 3.
So, the n-th term is
I = a + (n-1).d
= 3 + (n-1)×2
= 1 + 2n.
So the required sum is
= (n/2)(a + I)
= (n/2)( 3 + 1 + 2n)
= (n/2)(4 + 2n)
= n (n+2)
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The answer is 4 because it adds 4 to each one.